Hand dryers mounted on walls in public restrooms direct airflow through grilles. These grilles consist of rows of narrow slots or perforations designed to disperse the air evenly.
Grilles on hand dryers received regular maintenance in the past. Cleaning staff brushed out lint and dust trapped in the slots using small tools or vacuums. The surfaces of the grilles were wiped down with mild cleaners during routine restroom checks. This upkeep occurred repeatedly to keep the openings clear.
Such cleaning of the grilles no longer takes place.
The hand dryers continue to occupy their positions on restroom walls. People press the sensor buttons or levers, and air passes outward through the grilles much as it did before.
The hand dryers stand ready without grille maintenance defining their ongoing presence.